季冻区公路路基的防冻垫层探讨

Discussion on the frost proof sub-crust of easy to frozen area road foundation

通过一系列室内试验详细分析了中砂、粗砂的冻胀敏感性因素(土质、水分和温度)以及垫层厚度对冻胀性的影响,研究成果在长余高速公路中得到很好的应用,有效防治了冻害,并可在今后的公路设计中作为重要的参考资料。

Through a series of laboratory tests, we comprehensively analyze the effects of the frost heaving sensitivity factors （soil, moisture and temperature） of medium sand and coarse sand on frost heave, as well as the layer thickness. Research results have been used in Changchun-Yushu expressway very well, and effectively prevent the frost damage, and it will be of great reference value to highway design.